Statement - I. Greater the molal depression constant of the solvent used less in the freezing point of the solution.
Statement - II. Depression in freezing point depends upon the nature of the solvent.

Options

A. Statement-1 is true, statement-2 is true and statement-2 is correct explanation for statement-1.
B. Statement-1 is true, statement-2 is true and statement-2 is NOT the correct explanation for statement-1.
C. Statement-1 is true, statement-2 is false.
D. Statement-1 is false, statement-2 is true.

Answer

To analyze the statements provided in the question, we will break down each statement step by step.

### Step 1: Analyze Statement I
**Statement I**: "Greater the molal depression constant of the solvent used less in the freezing point of the solution."

- The molal depression constant (Kf) is a property of the solvent that indicates how much the freezing point of the solvent will decrease when a solute is added.
- The relationship can be expressed as:
\[ \Delta T_f = K_f \times m \]
where \(\Delta T_f\) is the depression in freezing point and \(m\) is the molality of the solution.
- If the value of Kf is greater, it means that for the same molality, the depression in freezing point (\(\Delta T_f\)) will be greater. Therefore, a greater Kf leads to a greater depression in freezing point, not less.

**Conclusion for Statement I**: This statement is **False**.

### Step 2: Analyze Statement II
**Statement II**: "Depression in freezing point depends upon the nature of the solvent."

- The depression in freezing point is a colligative property, which means it depends on the number of solute particles in the solution, not on the nature of the solvent.
- The formula for depression in freezing point is:
\[ \Delta T_f = K_f \times m \]
Here, Kf is a constant for a specific solvent, but the depression itself does not depend on the type of solvent used; it depends on the concentration (molality) of the solute.
- Therefore, the nature of the solvent does not affect the depression in freezing point.

**Conclusion for Statement II**: This statement is **False**.

### Final Conclusion
- Statement I is **False**.
- Statement II is **False**.